Question

I have a program I want to profile with gprof. The problem (seemingly) is that it uses sockets. So I get things like this:

::select(): Interrupted system call

I hit this problem a while back, gave up, and moved on. But I would really like to be able to profile my code, using gprof if possible. What can I do? Is there a gprof option I’m missing? A socket option? Is gprof totally useless in the presence of these types of system calls? If so, is there a viable alternative?

EDIT: Platform:

• Linux 2.6 (x64)
• GCC 4.4.1
• gprof 2.19

Answer 1

The socket code needs to handle interrupted system calls regardless of profiler, but under profiler it’s unavoidable. This means having code like.

if ( errno == EINTR ) { ...

after each system call.

Take a look, for example, here for the background.